but science is to advanced now, that a lab can determine a painting's age. an independent analysis can tell us if mona lisa has a twin or just an admiring copy. for "good morning america," jeffr jeffrey kofman, abc news, london. >> we'll have to wait for that. >> a fresher, younger copy. >>> let's get the weather from sam. >> mona, you look so different. did you get some rest? get a little sun? that conversation. all right. let's deal with a little bit of rain in west texas. this is very good news. it came with some strong, gusty winds. and in brief, downpour fashion. but this area is five to seven inches behind in rainfall. there's more of that coming today. it's coming in the package of strong storms. the very good news here, that front sinks in. east texas, by the end of the week, dallas, houston, you're going to be getting some of this rain that's sitting in that part of the country. there's another zone of severe storms. and the heat's back in the west. if you missed it in southern california, that last round of 90-degree heat from vegas to l.a., you're